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Finding the Fourth Proportional to 40.41, 55.54 and 36.21

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Solution

The fourth proportional to 40.41, 55.54 and 36.21 is: 49.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.41 : 55.54 = 36.21 : x
  2. Step 2: Convert to fraction form
    40.41/55.54 = 36.21/x
  3. Step 3: Cross multiply
    40.41x = 55.54 × 36.21
  4. Step 4: Simplify right side
    40.41x = 2,011.36
  5. Step 5: Solve for x
    x = 2,011.36/40.41
  6. Step 6: Final answer
    x = 49.77

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.